Dr Helmut Marko has played down his own camp’s boasts about its Formula 1 fuel for the new season. A week ago, Red Bull put out a press release announcing that ExxonMobil had produced a new fuel for the Honda-powered teams in 2021. Former Mercedes engine boss Mario Illien says Red Bull’s boasts were not empty. “A new fuel mix can give you five more horsepower.”. Another former Mercedes boss thinks what we are witnessing is both Red Bull and Mercedes not wanting to take on the role of 2021 title favourite. “From what I saw during the test, I would rate Red Bull very highly,” Norbert Haug told Sky Deutschland.

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